Razor having shearheads with one end closer to each other than the other end



p 23, 1952 i v KOBLER ETAL 2,611,175

RAZOR HAVING SHEARHEADS WITH ONE END CLOSER TO EACH OTHER THAN THE OTHER END Filed March 27, 1950 lA/rwmes M r/v, Mm M64 Patented Sept. 23, 1952 RAZOR HAVING SHEARHEADS WITH ONE END CLOSER TO EACH OTHER THAN THE OTHER END Victor Kobler and Werner Kobler, Zurich, Switzerland Application March 27, 1950, Serial No. 152,046 In Switzerland January 18, 1950 2 Claims. 1

Dry shavers with two or more shearheads arranged in parallel relation, to achieve a closer shave, are known.

In shaving operation the first shearhead has a pulling action on the skin and the second shearhead follows over the stretched skin. With the stretching of the skin the hair or stubble tends to assume positions vertical to the skin surface and also projects more out of the pores, which makes it possible, that the stubble cut by the advancing shearhead may be cut deeper by the following shearhead.

This stretching action on the chin is different according to the distance between the shearheads, also according to the condition of the skin and the contour of the face. The description of the invention shows that these possibilities have been taken into consideration. The invention consists of a multiple head dry shaver, comprising at least two independent shaving heads or assemblies, which shaving heads are not in parallel relation to each other.

With such an arrangement of the shearheads it is possible to shave the different parts of the face with the skin stretched differently, according to ones desire. According to the angle and direction in which the shaver is held and moved, it is possible to choose for each part of the face the corresponding best stretching of the skin.

Preferably shearheads are taken into consideration, having an outer stationary cutter operating with a reciprocable inner cutter in such a way that the shearing action takes place not openly, but within the guard, which is at the same time the outer cutter. Such constructions, where the outer cutter forms a guard, make it possible to press the shearhead harder against the skin, without injury and therefore they allow a greater stretching of the skin. The slots in these outer cutters are continuous, as such an arrangement takes good care of the skin, compared with interrupted slots or guard openings which are arranged like a sieve. Such sieve cutter guards will bring positively into vertical position the hair that enters the sieve holes, however they exert an unpleasant pressure on the stubble which does not enter the holes. Continuous slots have the disadvantage, that strong, rather horizontal stubble cannot be suificiently pulled up to a vertical position and therefore the inner cutter cannot cut them, as long as the slots are guided over the stubble in the same direction as the stubble lies on the skin. Such disadvantages associated with outer cutter guards, where the slots go right through, are eliminated by the present 2 invention. With this invention the strong stubble which goes right through the first shaver head without being cut, is pulled vertically by the inclined position of the second shearhead. This second shearhead is at an angle with the line of motion of the first shearhead and therefore the hair has no Way to escape the inner cutter. Stubble that goes in an inclined position through the opening of the cutters, may be caught more securely and lifted up more cautiously with shearheads having continuous slots than with those having interrupted slots.

With shearheads not in parallel relation to each other the skin is stretched in different directions, when the shearheads are in motion, according to the direction of this motion the skin is either stretched by the first shearhead in a straight and by the second shearhead in an inclined direction, or in the reverse order. The result is that the stubble is pushed up to a vertical position from different directions.

Furthermore if the shaver moves over the skin with the ends of the shearheads near together, the effect is similar to the effect of a plough, as the skin is very much stretched apart. Moved in the opposite direction the skin may be raised by the shearheads, wherever desired, which is an advantage for certain growth of hair, as it may pull up the stubble to a different position. The shearheads may be of a straight construction, or curved lengthwise. Those shearheads with the cutting part curved lengthwise and concave have the further advantage with an inclined arrangement of the shearheads, that according to the angle with which the shaver touches the skin, either the part where the shearheads are further apart or the part where the shearheads are nearer together can be used, as desired.

Therefore it is possible to shave the different parts of the face with the distance of the shearheads best suited and chosen for any particular shaving operation. Such lengthwise curved shearheads have the added advantage that they stretch the skin to an inside arch and with it the skin is stretched in two directions for the trailing shearhead.

This inclined relation of the shearheads governs the stretching of the skin according to the angle with which they touch the skin and with it also the crosswise stretching of the skin works in a different angle, according to the direction in which the shaver is moved. The result is, that even with moving the shaver back and 3 forth in the same direction the stubble is pushed up in difierent directions.

In the accompanying drawings, which serve to illustrate several embodiments of this invention Fig. 1 is a front elevation partly in section Fig. 2 is; a view in side elevation of liig. 1

Fig. 3 is a top plan view of Fig. 1

Figs. 4 and 5 are variations of the invention in a top plan view. 7

The upper part of the shaver, seen in Figs. 1 and 2 shows two shearheads I and I in an in clined position relative to each other in relation to their distance apart.

Each shearhead has a hollow stationaryeuard 2 these guards have transverse slots which pro;

vide the shearing edges and thus constitute outer cutters and each having an inner cutter 3, reciprocated through lever A with round pin 5 and collar 6, which collar may turn and move up and down. 'llhis collar presses with spring. 1

the inneifcutter a ai st the guard 2; The'jinner.

cutter andfthe outer cutter "orguard are" with their cutting surface's'curved lengthwise in a vertical plane passing through the longitudinal axis. of the cutter,"likea segment and have thefpurpos'e'bjf stretching thefsk in lengthwise when the. av if iichesl thef'skin and furthermore; according to 'the inclination ofthe shaver and the pressure witlifwhichthefshav'er is moved over" n the's'kimonlya part. ofboth shearheads will worls, with the result that, as desir'ed, 'theQdiffer'ent parts of the face canb shavea with a different i e es ;aa ieqs irl i h- It' is understoodthat. this arrangement 7 of the shaverheadsfbovers' also straight. shear-- heads as "used onfstanda'r'd, shavers. so to. speak in" an inclined position; iii relation, to the Sheartionto skin A andiskini B, drawn with dots. It is obvious that the position'o'f the shaver in .relation to skinpart A results in a difierent distance of the shaverheads, thanthe one, resulting from using the shaver on skin partB, because the distance '01, the shearhead endsvaries with the i11+ V is"in"an inclined positiofiinrelationf to the two outside 'shearheads; Another variation with three shearheadsis seenin Fig'.5iwhere' all'thre'e shearheads are'arranged'in an inclined position in relation to each' 'other. Other variations are possible'as the arrangement of. more than 3' shearheads whereby at least two or allarev in any desirable inclinationt'o each other.

apart from th longitudinal motion also a small 'The movable cutters of the shearheadsmay. so

be operated separately, ortogether with. one lever.

crosswise, motionin'relation to the inner cutter. Friction is eliminated by the fact, that collar 6 can turn on lever pin 5.

The. difierent drawings of shearheads show separate shearhead units, that is each shearhead hasfa separate outer cutter and belonging to ma separate inner cutter and means to attach andlockthe unit to the shaver. Furthermore Figs. 1 to 3 show that each shearhead is provided i h 0 1 1? 1%95 9! q fi f' he .513%; m Q the u er u t r: an asiapte t n crew-f r;- he removal of the severed hair tips ang means per-s m ii n f e s wi hin 9; c sing. in l n e he ut flap fit aei cutter; headr Ha n h e b' bedfihe nyse 1Q mama ies i is part at,

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er-g WTQFEKQBLER-z EEEEEFSQES Q TS The following. references are ,of.; record int the file of this patent:. EWERSIAEEfiqBATEWS;

umb r- N m I Date;

Foreman-PATENTS Number Country Date 221371 Switzerland 

